Knight's Armament SR-15 KS-1 | Upper Receiver Kit

The Knight’s Armament SR-15 KS-1 Upper Receiver Kit is a factory-configured upper designed for AR-15 platform rifles chambered in 5.56 NATO. It features a 13.7-inch cold hammer forged barrel with a 1:7 twist rate and chrome-lined bore, paired with a durable handguard utilizing the M-LOK interface system. The barrel’s heavy profile and dimpled design contribute to heat management and consistent performance across a variety of shooting applications.

This upper receiver kit includes a complete bolt carrier group with the E3.2 bolt, charging handle, and a compatible muzzle device, along with a selection of Knight’s Armament accessories. Also included are low-profile micro front and rear iron sights, an M-LOK to Picatinny rail section, an M-LOK QD sling adapter, and a H2 buffer. The package provides a comprehensive upper assembly suitable for users seeking a complete and ready-to-install solution.

Specifications

• Caliber: 5.56 NATO
• Barrel Length: 13.7 in
• Barrel Type: Cold hammer forged, chrome lined
• Twist Rate: 1:7
• Barrel Profile: Dimpled heavy profile
• Handguard: M-LOK compatible
• Bolt Carrier Group: Included with E3.2 bolt
• Charging Handle: Included
• Muzzle Device: Included
• Sights: Front and rear 600m micro iron sights included
• Accessories Included:
  • M-LOK to Picatinny rail section
  • M-LOK QD sling adapter
  • H2 buffer